| heavy liquid petrolatum | <chemical> A mixture of liquid hydrocarbons obtained from petroleum. It is used as laxative, lubricant, ointment base, and emollient. Pharmacological action: cathartic, emollients, ointment bases. Chemical name: Hydrocarbon oils (12 Dec 1998) |
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| heavy metal | A metal with a high specific gravity, typically larger than 5; e.g., Fe, Co, Cu, Mn, Mo, Zn, V. (05 Mar 2000) |
| heavy metal neuropathy | Peripheral nervous system disorders attributed to intoxication of one of the heavy metals: arsenic, gold, lead, mercury, platinum and thallium. (05 Mar 2000) |
| heavy nitrogen | The less common stable nitrogen isotope, making up 0.37% of natural nitrogen. Synonym: heavy nitrogen. (05 Mar 2000) |
| heavy oxygen | A stable oxygen isotope making up 0.20% of natural oxygen; used in mass spectrometry and in NMR studies of tissue. Synonym: heavy oxygen. (05 Mar 2000) |
| heavy spar | <chemical> Native barium sulphate or barite, so called because of its high specific gravity as compared with other non-metallic minerals. Source: Websters Dictionary (01 Mar 1998) |
| heavy water | most commonly used by cell biologists to stabilise microtubules. (18 Nov 1997) |
| L-chain disease | bence Jones myeloma |
| alpha, alpha-phosphotrehalase | <enzyme> Forms glucose plus glucose-6-phosphate Registry number: EC 3.2.1.93 Synonym: trehalose-6-phosphate hydrolase, phospho-alpha(1,1)glucosidase, trea gene product, trec gene product (26 Jun 1999) |
| alpha,alpha-trehalose phosphorylase | <enzyme> Chemical name: alpha-d-glucopyranosyl-alpha-d-glucopyranose orthophosphate glucosyltransferase Registry number: EC 2.4.1.64 Synonym: trehalose phosphorylase (26 Jun 1999) |
| alpha-dextrin endo-1,6-alpha-glucosidase | <enzyme> An enzyme with action similar to that of isoamylase; it cleaves 1,6-alpha-glucosidic linkages in pullalan, amylopectin, and glycogen, and in alpha-and beta-amylase limit-dextrins of amylopectin and glycogen. Compare: isoamylase. Synonym: limit dextrinase, pullulanase, R enzyme. (05 Mar 2000) |
| alpha-hydroxymethyl-alpha'-(N-acetylaminomethylene)succinic acid hydrolase | <enzyme> Involved in degradation of vitamin b6; forms acetic acid plus ammonia plus carbon dioxide plus alpha-hydroxymethyl-succinic monoaldehyde Registry number: EC 3.5.1.- Synonym: compound b hydrolase (26 Jun 1999) |
| cholesterol-5 alpha,6 alpha-epoxide hydrase | <enzyme> Aspect of epoxide hydrolase, EC 3.3.2.3 Pharmacological action: carcinogen Registry number: EC 3.3.2.- Synonym: cholesterol epoxide hydrase, cholesterol epoxide hydrolase (26 Jun 1999) |
| CMP-acetylneuraminate-alpha-N-acetylneuramide alpha-2,8-sialyltransferase | <enzyme> Forms ganglioside gd3 Registry number: EC 2.4.99.8 Synonym: cmp-n-acetylneuraminate-gm3 sialyltransferase, gm3-sialosyltransferase, gd3 synthase, gd3-synthase, cmp-n-acetylneuraminate-(n-acetylneuraminyl)-d-galactosyl-d-glucosylceramide sialyltransferase, sialyltransferase II, st II, g(m3) alpha-2,8-sialyltransferase, st8sia I, stii enzyme, stiii enzyme, gt3 synthase (26 Jun 1999) |
| CMP-N-acetylneuraminate-alpha-N-acetylgalactosaminide alpha-2,6-sialyltransferase | <enzyme> Enzyme from foetal calf liver; forms branched tetrasaccharide, neuac-alpha2-3gal-beta1-3(neuac-alpha2-6)galnac of fetuin Registry number: EC 2.4.99.3 Synonym: cmp-aag-sialyltransferase, st6galnaci, galnac 2,6-sialyltransferase (26 Jun 1999) |